Senior Software Engineer - Partner Platform, APIs & Ecosystem Services

Quizlet • San Francisco, CA

36d • $192,500 - $231,600 • Onsite

About The Position

As a Senior Software Engineer, you'll design and implement the APIs and integrations that connect Quizlet to a global ecosystem of partners, AI agents, and learning platforms. You'll help define the architecture for our LearnOS plugin system, build developer tooling, and collaborate across teams to ensure secure, scalable, and discoverable services. We're happy to share that this is an onsite position in our San Francisco office, with a minimum of three days per week onsite: Monday, Wednesday, and Thursday.

Requirements

• 5+ years of backend or platform engineering experience, including API design.
• Strong experience building extensible REST/gRPC APIs, SDKs, and integration systems.
• Knowledge of OAuth2, rate limiting, and platform security best practices.
• Hands-on experience in Go, Python, Node.js, or TypeScript.
• Strong collaboration skills and a product-focused engineering mindset.

Responsibilities

• Design and deliver APIs powering partner integrations and agentic workflows.
• Develop infrastructure for Quizlet widgets and embedded experiences in LMS and productivity tools.
• Build developer-facing tools, SDKs, and plugin frameworks for external integrations.
• Ensure API reliability, scalability, and security through rate-limiting and observability.
• Mentor junior engineers and contribute to platform standards and design reviews.

Benefits

• Collaborate with your manager and team to create a healthy work-life balance
• 20 vacation days that we expect you to take!
• Competitive health, dental, and vision insurance (100% employee and 75% dependent PPO, Dental, VSP Choice)
• Employer-sponsored 401(k) plan with company match
• Access to LinkedIn Learning and other resources to support professional growth
• Paid Family Leave, FSA, HSA, Commuter benefits, and Wellness benefits
• 40 hours of annual paid time off to participate in volunteer programs of choice

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Industry: Educational Services
• Education Level: No Education Listed
• Number of Employees: 251-500 employees